使用selected屬性來指定在HTML頁面加載時應預先選擇該選項。您可以嘗試運行以下代碼來實現selected屬性 ?
示例
<!DOCTYPE html>
<html>
<head>
<title>HTML selected attribute</title>
</head>
<body>
<p>Here's the list of subjects. Select any one:</p>
<form>
<select name = "dropdown">
<option value = "Computer Architecture" selected>Computer Architecture</option>
<option value = "Java">Java</option>
<option value = "Discrete Mathematics">Discrete Mathematics</option>
</select>
</form>
</body>
</html>
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